What is $\\gcd(0,a)$, where $a$ is a positive integer?
2019年2月24日 · I have tried $\gcd(0,8)$ in a lot of online gcd (or hcf) calculators, but some say $\gcd(0,8)=0$, some other gives $\gcd(0,8)=8$ and some others give $\gcd(0,8)=1$.
How can I format a decimal to always show 2 decimal places?
The quantize () method rounds to a fixed number of decimal places. If the Inexact trap is set, it is also useful for validation: >>> TWOPLACES = Decimal(10) ** -2 # same as Decimal('0.01') >>> # Round to two places. >>> Decimal('3.214').quantize(TWOPLACES)
python - Display number with leading zeros - Stack Overflow
In Python 2 (and Python 3) you can do: number = 1. print("%02d" % (number,)) Basically % is like printf or sprintf (see docs). For Python 3.+, the same behavior can also be achieved with format: number = 1. print("{:02d}".format(number)) For Python 3.6+ the same behavior can be achieved with f-strings: number = 1.
Replacing NULL with 0 in a SQL server query - Stack Overflow
For regular SQL, ISNULL(item) can only take one parameter, and thus 90% of these solutions don't work. I repurposed @Krishna Chavali's answer to make this: (CASE WHEN (NOT ISNULL(column_name)) THEN column_name ELSE 0 END) AS ColumnName. This will return the value in column_name if it is not null, and 0 if it is null.
What does "javascript:void (0)" mean? - Stack Overflow
2009年8月18日 · 35. Usage of javascript:void(0) means that the author of the HTML is misusing the anchor element in place of the button element. Anchor tags are often abused with the onclick event to create pseudo-buttons by setting href to "#" or "javascript:void (0)" to …
IF statement: how to leave cell blank if condition is false ...
2013年9月12日 · Well, the problem for me is not the results of the "blank test" per say, but rather the following: I apply the if statement to a whole row, and then I would like to use Go To -> Special -> Blanks to delete the blank cells from the row, i.e. the cells for which the condition was false.
RegEx for matching "A-Z, a-z, 0-9, _" and "." - Stack Overflow
2019年5月14日 · 93. ^[A-Za-z0-9_.]+$. From beginning until the end of the string, match one or more of these characters. Edit: Note that ^ and $ match the beginning and the end of a line. When multiline is enabled, this can mean that one line matches, but not the complete string. Use \A for the beginning of the string, and \z for the end.
How return a count (*) of 0 instead of NULL - Stack Overflow
2011年11月7日 · Wrap your SELECT Query in an ISNULL: SELECT ISNULL((SELECT Project, Financial_Year, COUNT(*) AS hrc. INTO #HighRisk. FROM #TempRisk1. WHERE Risk_1 = 3. GROUP BY Project, Financial_Year),0) AS HighRiskCount. If your SELECT returns a number, it will pass through. If it returns NULL, the 0 will pass through.
replace NULL with Blank value or Zero in sql server
2017年5月3日 · Replacing NULL value using: 1. ISNULL () function. 2. COALESCE () function. 3. CASE Statement. SELECT Name as EmployeeName, ISNULL(Bonus,0) as EmployeeBonus from tblEmployee. SELECT Name as EmployeeName, COALESCE(Bonus, 0) as EmployeeBonus.
c - What do 0LL or 0x0UL mean? - Stack Overflow
2011年8月12日 · LL designates a literal as a long long and UL designates one as unsigned long and 0x0 is hexadecimal for 0. So 0LL and 0x0UL are an equivalent number but different datatypes; the former is a long long and the latter is an unsigned long. There are many of these specifiers: 1F // float. 1L // long.